Home / 21,002.25-28,983.24-11,570.88

Finding the Fourth Proportional to 21,002.25, 28,983.24 and 11,570.88

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Solution

The fourth proportional to 21,002.25, 28,983.24 and 11,570.88 is: 15,967.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.25 : 28,983.24 = 11,570.88 : x
  2. Step 2: Convert to fraction form
    21,002.25/28,983.24 = 11,570.88/x
  3. Step 3: Cross multiply
    21,002.25x = 28,983.24 × 11,570.88
  4. Step 4: Simplify right side
    21,002.25x = 335,361,592.05
  5. Step 5: Solve for x
    x = 335,361,592.05/21,002.25
  6. Step 6: Final answer
    x = 15,967.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.